commit 3fafd935607844085a23c012e2a8778fa97206a0
author Bill Wendling <isanbard@gmail.com> Wed Nov 26 22:37:40 2008 +0000
committer Bill Wendling <isanbard@gmail.com> Wed Nov 26 22:37:40 2008 +0000
tree f4f161d7b54e78e250c1789525bb7009601f3767
parent ab8b794a789390ca2f1ad5372d4813911e306663

Generate something sensible for an [SU]ADDO op when the overflow/carry flag is
the conditional for the BRCOND statement. For instance, it will generate:

    addl %eax, %ecx
    jo LOF

instead of

    addl %eax, %ecx
    ; About 10 instructions to compare the signs of LHS, RHS, and sum.
    jl LOF



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60123 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/X86InstrInfo.cpp

diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp
index 2e449b9..ba73f49 100644
--- a/lib/Target/X86/X86InstrInfo.cpp
+++ b/lib/Target/X86/X86InstrInfo.cpp
@@ -1382,6 +1382,8 @@
   case X86::JNP: return X86::COND_NP;
   case X86::JO:  return X86::COND_O;
   case X86::JNO: return X86::COND_NO;
+  case X86::JC:  return X86::COND_C;
+  case X86::JNC: return X86::COND_NC;
   }
 }
 
@@ -1404,6 +1406,8 @@
   case X86::COND_NP: return X86::JNP;
   case X86::COND_O:  return X86::JO;
   case X86::COND_NO: return X86::JNO;
+  case X86::COND_C:  return X86::JC;
+  case X86::COND_NC: return X86::JNC;
   }
 }
 
@@ -1428,6 +1432,8 @@
   case X86::COND_NP: return X86::COND_P;
   case X86::COND_O:  return X86::COND_NO;
   case X86::COND_NO: return X86::COND_O;
+  case X86::COND_C:  return X86::COND_NC;
+  case X86::COND_NC: return X86::COND_C;
   }
 }